Just went back and watched this... Wow! Very informative. And as @tanes256 said, it is really helpful to see what it looks like from a 99%-tile scorer's perspective.
Good luck but to give you some perspective: my previous tutor who ended up with a 180 on the exam still took about 3 to 4 months to study for the exam with a 160s diagnostic. Im not sure about your situation but best of luck